/* ==========================================================================
   Print Cost Bench — design tokens
   ========================================================================== */
:root {
  --bg: #F2F2EF;
  --surface: #FFFFFF;
  --surface-sunken: #F7F7F5;
  --border: #E4E3DD;
  --border-strong: #D3D2C9;
  --ink: #1B1B18;
  --ink-soft: #63625B;
  --ink-faint: #9B9A90;

  --accent: #E4572E;        /* hot-end orange */
  --accent-ink: #FFFFFF;
  --accent-soft: #FDEBE3;

  --material: #E4572E;
  --machine: #1E8A72;
  --labor: #3C5FE0;
  --hardware: #D9A441;
  --packaging: #7C8B9A;

  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;

  --font-ui: 'Inter', system-ui, sans-serif;
  --font-display: 'Space Grotesk', 'Inter', system-ui, sans-serif;
  --font-mono: 'IBM Plex Mono', ui-monospace, monospace;

  --shadow-card: 0 1px 2px rgba(27,27,24,0.04), 0 8px 24px -12px rgba(27,27,24,0.10);
}

* { box-sizing: border-box; }

[hidden] { display: none !important; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-ui);
  font-size: 15px;
  line-height: 1.5;
}

body {
  min-height: 100vh;
  position: relative;
}

@media (prefers-reduced-motion: reduce) {
  * { transition: none !important; animation: none !important; }
}

/* subtle print-bed grid behind everything, evokes the build plate */
.grid-bg {
  position: fixed;
  inset: 0;
  z-index: -1;
  background-image:
    linear-gradient(to right, rgba(27,27,24,0.035) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(27,27,24,0.035) 1px, transparent 1px);
  background-size: 28px 28px;
}

a { color: inherit; }

/* ==========================================================================
   Top bar
   ========================================================================== */
.topbar {
  max-width: 1180px;
  margin: 0 auto;
  padding: 28px 24px 8px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}

.brand { display: flex; align-items: center; gap: 12px; }

.brand-mark {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-md);
  background: var(--ink);
  color: var(--accent);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.brand-text h1 {
  font-family: var(--font-display);
  font-size: 19px;
  font-weight: 700;
  margin: 0;
  letter-spacing: -0.01em;
}

.brand-text p {
  margin: 1px 0 0;
  font-size: 12.5px;
  color: var(--ink-soft);
}

.topbar-actions { display: flex; gap: 8px; flex-wrap: wrap; }

/* ==========================================================================
   Buttons
   ========================================================================== */
.btn {
  font-family: var(--font-ui);
  font-size: 13.5px;
  font-weight: 600;
  padding: 9px 15px;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform 0.08s ease, background 0.15s ease, border-color 0.15s ease;
  white-space: nowrap;
}
.btn:active { transform: translateY(1px); }
.btn:focus-visible { outline: 2px solid var(--labor); outline-offset: 2px; }

.btn-primary { background: var(--ink); color: #fff; }
.btn-primary:hover { background: #000; }

.btn-ghost { background: transparent; border-color: var(--border-strong); color: var(--ink); }
.btn-ghost:hover { background: var(--surface-sunken); }

.btn-danger-text {
  background: none; border: none; color: #B23A2E; font-size: 13px; font-weight: 600; cursor: pointer; padding: 4px 6px;
}
.btn-danger-text:hover { text-decoration: underline; }

.btn-text {
  background: none; border: none; color: var(--ink-soft); font-size: 13px; font-weight: 600; cursor: pointer; padding: 4px 6px;
}
.btn-text:hover { color: var(--ink); }

/* ==========================================================================
   Layout
   ========================================================================== */
.layout {
  max-width: 1180px;
  margin: 0 auto;
  padding: 16px 24px 40px;
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
  gap: 20px;
}

.col-right { display: flex; flex-direction: column; gap: 20px; min-width: 0; }

.panel-projects { grid-column: 1 / -1; }

@media (max-width: 900px) {
  .layout { grid-template-columns: 1fr; }
}

/* ==========================================================================
   Panels & fields
   ========================================================================== */
.panel {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
  padding: 22px;
}

.panel-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 10px;
  margin-bottom: 16px;
}

.panel-head h2 {
  font-family: var(--font-display);
  font-size: 15.5px;
  font-weight: 700;
  margin: 0;
  letter-spacing: -0.005em;
}

.pill {
  font-size: 11.5px;
  font-weight: 600;
  color: var(--machine);
  background: #E7F4F0;
  padding: 3px 9px;
  border-radius: 100px;
}

.field { margin-bottom: 16px; min-width: 0; }
.field:last-child { margin-bottom: 0; }

.field-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
  margin-bottom: 16px;
}
.field-row .field { margin-bottom: 0; }
.field-row-3 { grid-template-columns: 1fr 1fr 1fr; }
.field-row-4 { grid-template-columns: repeat(4, 1fr); }

@media (max-width: 520px) {
  .field-row, .field-row-3, .field-row-4 { grid-template-columns: 1fr; }
}

label {
  display: block;
  font-size: 12.5px;
  font-weight: 600;
  color: var(--ink-soft);
  margin-bottom: 6px;
}

input[type="text"],
input[type="number"],
select {
  width: 100%;
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 500;
  color: var(--ink);
  background: var(--surface-sunken);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 9px 11px;
  transition: border-color 0.12s ease, background 0.12s ease;
}

input[type="text"] { font-family: var(--font-ui); font-weight: 400; }

input:focus-visible, select:focus-visible {
  outline: none;
  border-color: var(--accent);
  background: #fff;
}

input::placeholder { color: var(--ink-faint); font-family: var(--font-ui); }

.input-suffix {
  display: flex;
  align-items: stretch;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--surface-sunken);
  overflow: hidden;
}
.input-suffix input {
  border: none;
  background: transparent;
  flex: 1;
  min-width: 0;
}
.input-suffix input:focus-visible { outline: none; background: #fff; }
.input-suffix:focus-within { border-color: var(--accent); }
.input-suffix span {
  display: flex;
  align-items: center;
  padding: 0 10px;
  font-size: 12px;
  font-weight: 600;
  color: var(--ink-faint);
  background: var(--surface-sunken);
  border-left: 1px solid var(--border);
}

.hint {
  font-size: 12px;
  color: var(--ink-faint);
  margin: 6px 0 0;
}

/* segmented control (technology switch) */
.segmented {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
}
.segmented-btn {
  text-align: left;
  padding: 10px 12px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background: var(--surface-sunken);
  cursor: pointer;
  transition: border-color 0.12s ease, background 0.12s ease;
}
.segmented-btn strong { display: block; font-size: 13.5px; }
.segmented-btn span { display: block; font-size: 11px; color: var(--ink-faint); margin-top: 1px; font-weight: 500; }
.segmented-btn:hover { border-color: var(--border-strong); }
.segmented-btn.is-active {
  background: var(--ink);
  border-color: var(--ink);
}
.segmented-btn.is-active strong,
.segmented-btn.is-active span { color: #fff; }
.segmented-btn.is-active span { color: rgba(255,255,255,0.65); }
.segmented-btn:focus-visible { outline: 2px solid var(--labor); outline-offset: 2px; }

.field-checkbox-wrap { display: flex; flex-direction: column; justify-content: center; }
.checkbox-line {
  display: flex; align-items: center; gap: 8px;
  font-size: 13.5px; font-weight: 600; color: var(--ink);
  cursor: pointer; margin-bottom: 0;
}
.checkbox-line input { width: 16px; height: 16px; accent-color: var(--accent); cursor: pointer; }

/* advanced settings disclosure */
.advanced { margin-top: 4px; border-top: 1px solid var(--border); padding-top: 14px; }
.advanced summary {
  cursor: pointer;
  font-size: 13px;
  font-weight: 700;
  color: var(--ink);
  list-style: none;
  display: flex;
  align-items: baseline;
  gap: 8px;
}
.advanced summary::-webkit-details-marker { display: none; }
.advanced summary::before {
  content: '▸';
  color: var(--accent);
  font-size: 11px;
  transition: transform 0.15s ease;
}
.advanced[open] summary::before { transform: rotate(90deg); }
.advanced summary span { font-size: 12px; font-weight: 500; color: var(--ink-faint); }
.advanced-body { padding-top: 16px; }

/* ==========================================================================
   Pricing tiers
   ========================================================================== */
.tiers {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 10px;
  margin-bottom: 18px;
}
@media (max-width: 560px) { .tiers { grid-template-columns: 1fr; } }

.tier-card {
  text-align: left;
  border: 1.5px solid var(--border);
  border-radius: var(--radius-md);
  background: var(--surface-sunken);
  padding: 12px 14px;
  cursor: pointer;
  transition: border-color 0.12s ease, background 0.12s ease;
}
.tier-card:hover { border-color: var(--border-strong); }
.tier-card:focus-visible { outline: 2px solid var(--labor); outline-offset: 2px; }
.tier-card.is-selected {
  border-color: var(--accent);
  background: var(--accent-soft);
}
.tier-name { font-size: 12px; font-weight: 700; text-transform: uppercase; letter-spacing: 0.04em; color: var(--ink-soft); }
.tier-card.is-selected .tier-name { color: var(--accent); }
.tier-price-row { display: flex; align-items: baseline; gap: 8px; flex-wrap: wrap; }
.tier-price { font-family: var(--font-mono); font-size: 18px; font-weight: 600; margin-top: 4px; }
.tier-unit-price { font-family: var(--font-mono); font-size: 11px; color: var(--ink-soft); }
.tier-margin { font-size: 11.5px; color: var(--ink-faint); margin-top: 2px; }
.tier-vat { font-size: 11px; color: var(--ink-faint); margin-top: 6px; border-top: 1px dashed var(--border); padding-top: 6px; }

.custom-tier { border: 1.5px solid var(--border); border-radius: var(--radius-md); padding: 12px 14px; margin-bottom: 16px; }
.custom-tier-head { display: flex; align-items: center; justify-content: space-between; margin-bottom: 8px; }
.custom-tier-head label { margin: 0; font-size: 12px; font-weight: 700; text-transform: uppercase; letter-spacing: 0.04em; color: var(--ink-soft); }
.custom-tier-head output { font-family: var(--font-mono); font-weight: 600; font-size: 13px; }
input[type="range"] { width: 100%; accent-color: var(--accent); cursor: pointer; }

.pricing-advanced { margin-bottom: 16px; border-top: 1px solid var(--border); padding-top: 14px; }
.pricing-advanced summary { cursor: pointer; font-size: 13px; font-weight: 700; color: var(--ink); list-style: none; display: flex; align-items: baseline; gap: 8px; }
.pricing-advanced summary::-webkit-details-marker { display: none; }
.pricing-advanced summary::before { content: '▸'; color: var(--accent); font-size: 11px; transition: transform 0.15s ease; }
.pricing-advanced[open] summary::before { transform: rotate(90deg); }
.pricing-advanced summary span { font-size: 12px; font-weight: 500; color: var(--ink-faint); }
.pricing-advanced-body { padding-top: 12px; }

.selected-price {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  background: var(--ink);
  color: #fff;
  border-radius: var(--radius-md);
  padding: 16px 18px;
  flex-wrap: wrap;
}
.selected-label { display: block; font-size: 11.5px; font-weight: 600; text-transform: uppercase; letter-spacing: 0.05em; color: rgba(255,255,255,0.6); }
.selected-amount-row { display: flex; align-items: baseline; gap: 9px; flex-wrap: wrap; }
.selected-price strong { font-family: var(--font-mono); font-size: 24px; font-weight: 600; }
.selected-unit-price { font-family: var(--font-mono); font-size: 12px; color: rgba(255,255,255,0.7); }
.selected-meta { font-size: 12.5px; color: rgba(255,255,255,0.7); text-align: right; }

/* ==========================================================================
   Cost breakdown
   ========================================================================== */
.breakdown { display: flex; gap: 22px; align-items: center; flex-wrap: wrap; }
.breakdown-list { flex: 1 1 220px; min-width: 200px; }

.breakdown-row {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 9px 0;
  border-bottom: 1px solid var(--border);
  font-size: 13.5px;
}
.breakdown-row:last-child { border-bottom: none; }
.row-label { flex: 1; color: var(--ink-soft); }
.row-value { font-family: var(--font-mono); font-weight: 600; }

.dot { width: 9px; height: 9px; border-radius: 50%; flex-shrink: 0; }
.dot-material { background: var(--material); }
.dot-machine { background: var(--machine); }
.dot-labor { background: var(--labor); }
.dot-hardware { background: var(--hardware); }
.dot-packaging { background: var(--packaging); }

.breakdown-total { padding-top: 12px; font-weight: 700; }
.breakdown-total .row-label { color: var(--ink); font-weight: 700; }
.breakdown-total .row-value { font-size: 15px; }
.breakdown-sub .row-label, .breakdown-sub .row-value { color: var(--ink-faint); font-weight: 500; font-size: 12.5px; }

.donut-wrap { display: flex; flex-direction: column; align-items: center; gap: 8px; flex-shrink: 0; margin: 0 auto; }
.donut {
  width: 128px; height: 128px;
  border-radius: 50%;
  background: conic-gradient(var(--border) 0 100%);
  position: relative;
}
.donut::after {
  content: '';
  position: absolute;
  inset: 20px;
  border-radius: 50%;
  background: var(--surface);
}
.donut-caption { font-size: 11.5px; color: var(--ink-faint); text-align: center; max-width: 130px; }

/* ==========================================================================
   Saved projects
   ========================================================================== */
.projects-empty {
  font-size: 13.5px;
  color: var(--ink-faint);
  background: var(--surface-sunken);
  border: 1px dashed var(--border-strong);
  border-radius: var(--radius-md);
  padding: 18px;
  text-align: center;
}

.projects-list {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(230px, 1fr));
  gap: 12px;
}

.project-card {
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 14px;
  background: var(--surface-sunken);
  cursor: pointer;
  transition: border-color 0.12s ease, background 0.12s ease;
}
.project-card:hover { border-color: var(--border-strong); }
.project-card:focus-visible { outline: 2px solid var(--labor); outline-offset: 2px; }
.project-card.is-current { border-color: var(--accent); background: var(--accent-soft); }

.project-card-top { display: flex; justify-content: space-between; gap: 8px; align-items: baseline; }
.project-name { font-weight: 700; font-size: 13.5px; overflow-wrap: anywhere; }
.project-tech { font-size: 10.5px; font-weight: 700; text-transform: uppercase; letter-spacing: 0.04em; color: var(--ink-faint); white-space: nowrap; }

.project-meta { font-size: 12px; color: var(--ink-soft); margin-top: 4px; }
.project-price-row { display: flex; align-items: baseline; gap: 9px; flex-wrap: wrap; margin-top: 8px; }
.project-price { font-family: var(--font-mono); font-weight: 600; font-size: 15px; }
.project-unit-price { font-family: var(--font-mono); font-size: 12px; color: var(--ink-soft); }
.project-pricing { font-size: 12px; color: var(--ink-soft); margin-top: 4px; }

.project-actions { display: flex; justify-content: space-between; align-items: center; margin-top: 10px; border-top: 1px solid var(--border); padding-top: 8px; }

/* ==========================================================================
   Footer
   ========================================================================== */
.foot {
  max-width: 1180px;
  margin: 0 auto;
  padding: 0 24px 32px;
  text-align: center;
}
.foot p { font-size: 12px; color: var(--ink-faint); }
.foot code { background: var(--surface-sunken); border: 1px solid var(--border); border-radius: 4px; padding: 1px 5px; font-family: var(--font-mono); }